Context
The quality of the acoustic communication link between the sensors and the receiver can be challenged by noise. When noise appears in the same frequency range as the sensors are using for their communication, the resulting information
may be unstable or unreadable. The graph in the Spectrum dialog box provides you with information about the background noise and the signal strength in the selected frequency band. With this information you can identify noise and find the "cleanest" frequencies. On the top and bottom parts of the graph, the channel identifiers correspond to the relevant receiver channel. With the channel identifiers you can easily see in which channels you have signals and noise.
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The upper scale (PI) identifies the channels for the PI Family receivers. |
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The bottom scale (SR) identifies the channels for the SR Family receivers. |
The graph plots data using a 16 colour palette. Red colour corresponds to the maximum value defined, while blue is the minimum.
NoteThe Spectrum dialog box can only be used with SR type receiver units: